<!DOCTYPE html>
<html>

<head>
  <meta charset="UTF-8" />
  <title>index</title>
  <!-- 引入Vue -->
  <script type="text/javascript" src="../../js/vue.js"></script>
</head>

<body>
  <!-- 准备好一个容器-->
  <div id="demo">

  </div>
</body>

<script type="text/javascript">
  new Vue({
    el: '#demo',
    data() {
      return {

      }
    }
  })
</script>

</html>